混合單元法 的英文怎麼說
中文拼音 [húngědānyuánfǎ]
混合單元法
英文
hybrid-element method-
Being aimed to the irrationality and inadaptability of different calculation methods for wide cantilever plate, study of space numeric simulation analysis about concrete box bridge cantilever plate can be carried out for three dimension solids based on ansys
摘要針對混凝土箱梁懸臂板諸多演算法的不合理性，應用大型通用有限元分析軟體ansys ，以三維實體單元對混凝土箱梁懸臂板進行空間數值模擬分析研究。This article puts forward a solution named divide - assemble by deducing the size of bp neural network to overcome entering the local best point, the dividing process is that a big bp neural network is divided into several small bp neural networks, every small bp neural network can study alone, after all small bp neural networks finish their study, we can assemble all these small bp neural networks into the quondam big bp neural networks ; on the basis of divide - assemble solution, this article discusses the preprocessing of input species and how to deduce the size of bp neural network further to make it easy to overcome entering the local best point ; for the study of every small bp neural network, this article adopts a solution named gdr - ga algorithm, which includes two algorithms. gdr ? a algorithm makes the merits of the two algorithms makeup each other to increase searching speed. finally, this article discusses the processing of atm band - width distribution dynamically
本文從bp網的結構出發，以減小bp神經網路的規模為手段來克服陷入局部極小點，提出了bp神經網路的拆分組裝方法，即將一個大的bp網有機地拆分為幾個小的子bp網，每個子網的權值單獨訓練，訓練好以後，再將每個子網的單元和權值有機地組裝成原先的bp網，從理論和實驗上證明了該方法在解決局部極小值這一問題時是有效的；在拆分組裝方法基礎上，本文詳細闡述了輸入樣本的預處理過程，更進一步地減小了bp網路的規模，使子網的學習更加容易了；對于子網的學習，本文採用了最速梯度? ?遺傳混合演算法（即gdr ? ? ga演算法） ，使gdr演算法和ga演算法的優點互為補充，提高了收斂速度；最後本文闡述了用以上方法進行atm帶寬動態分配的過程。The elements of the reduced - jacobian matrix are functions of some parameters of the system. for example, effective short ratio, power base ratio, coupling impedance and load flow of the system. for single - infeed hvdc system with a parallel ac line, computer simulations using power system analysis software package ( psasp ) were performed
用一種簡單的方法可以求得降階雅可比矩陣，由於降階雅可比矩陣的元素都是交直流混合系統中一些參數的代數函數，如有效短路比、功率基準比、連接阻抗和系統潮流等，因此，矩陣的特徵值也與這些參數相關。Abstract : an algorithm is presented for better legal solution in detailed placement of large scale mixed macros and standard cells ic design. due to the limitation of computing complexity, an effective and efficient initial placement is very important for detailed placement. novelty of this algorithm lies in a better solution at initial stage by using network - flow method to satisfy row capacity constraint and the thought of linear placement problem ( lpp ) to resolve overlaps. moreover, divide - and - conquer strategy and other simplified methods are adopted to minimize complexity. experimental results show that the algorithm can get an average of 16 wire length improvement on paflo in reasonable cpu time
文摘:以大規模混合模式布局問題為背景，提出了有效的初始詳細布局演算法.在大規模混合模式布局問題中，由於受到計算復雜性的限制，有效的初始布局演算法顯得非常重要.該演算法採用網路流方法來滿足行容量約束，採用線性布局策略解決單元重疊問題.同時，為解決大規模設計問題，整體上採用分治策略和簡化策略，有效地控制問題的規模，以時間開銷的少量增加換取線長的明顯改善.實驗結果表明該演算法能夠取得比較好的效果，平均比paflo演算法有16的線長改善，而cpu計算時間只有少量增加This thesis explains the necessity of the character recognition technology of the computer at first, describe the meaning in which the handwritten numeral discerns ; pretreatment technology of handwritten numeral recognition, including two value, line segmentation, word segmentation smooth, removing noising, standardization and thinning are discussed two value concretely discusses whole threshold value, some threshold value, dynamic threshold value and utilize space information to carry on threshold, which are several kinds of common method of choosing threshold value, especially utilize space information to carry on threshold value is describe in detail ; adopting to the foundation of thinning based on mathematics morphology, thinning algorithm of serials same and thinning algorithm of protecting shape are discussed ; afterwards, according to principle ' s diagram of the on - line character recognition, by analyzing the structure feature of the handwritten numeral, this thesis has proposed the online recognition te chnology of the free handwritten numeral based on the stroke feature and the online recognition technology of the free handwritten numeral based on the multistage classifying device. detail narrated noise removing, stroke characteristic definition and discernment, distance criterion of whole word match ; then under the foundation of handwritten numeral segmentation, off - line handwritten numeral recognition is researched. especially minimum distance classifying device, tree classifying device and adaptive resonance ( art ) network classifying device is discussed at the same time, believes degree analyses are introduced to integrate a lot of classifying devices ; at the end, the typical application of the handwritten numeral recognition was briefly narrated, its application in extensive data statistics, financial affairs, tax, finance and mail sorting have been explored
二值化時對整體閾值二值化、局部閾值二值化、動態閾值二值化和利用空間信息進行閾值選取幾種常用的閾值選取方法進行討論，特別對利用空間信息進行閾值選取進行了詳細論述；在對通過對基於數學形態學的細化的基礎上，討論序貫同倫形態細化演算法和保形的快速形態細化演算法；然後依據聯機字元識別原理框圖，分析了手寫數字的結構特點，提出了基於筆劃特徵的任意手寫數字在線識別技術和基於多級分類器任意手寫數字在線識別技術，對其中涉及的筆劃識別前的噪聲處理、筆劃間特徵量的定義及識別、整字匹配的距離準則進行了詳細敘述；繼而在對手寫數字的分割的基礎下對脫機手寫數字識別進行了研究，對基於最小距離分類器字元識別、基於樹分類器的字元識別、基於自適應共振（ art ）網路的字元識別分別進行了詳細討論，並引入置信度分析將多個分類器進行了混合集成；最後簡單闡述了手寫數字識別的典型應用，對其在大規模數據統計、財務、稅務、金融及郵件分揀中的應用進行了探索。After deriving swt from the model, we find out that the water saturation equation is a quadratic equation about swt, so its solution is very simple and obtained by using the standard quadratic - root formula
通過研究混合泥質砂巖有效介質通用hb電阻率模型的求解方法，表明模型導出的關于s _ （ wt ）的方程是一個一元二次方程，可用求根公式求解，解法非常簡單。According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system
針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。Pian presented mix fem and hybrid fem in 1964. for its good capability in solving the irregular elements problems, incompressible material problems, and high precision in stress and strain results, the research of mix and hybrid fem is in the ascendant
Pian於1964年基於hu - washizu變分原理提出了雜交元和混合元方法，由於該方法在單元畸變、不可壓縮性和應力應變求解方面表現出優異的性能，目前的研究正方興未艾。The sequence of two patterns presence is changed alternately, that is, one pattern will appear at the second pulse of total pattern in this half cycle if it appears at first pulse in last half cycle. the stability of square pattern was studied by considering the interaction among the wall charges. the discharge moments of individual filament alternate from long one to short in the square pattern, which can been explained by using the breakdown and quench model through considering the wall discharge accumulated on the dielectric layers
實驗研究了正方網格斑圖與混合氣體的比例及外加電壓的關系，給出了班圖類型隨上述條件變化的相圖；實驗採用光學方法對正方網格斑圖進行了時空動力學測量，發現正方網格斑圖是由兩套正方網格斑圖相互嵌套而成，其中一套的微放電絲位於另一套正方形單元的中心，這兩套微放電絲交替進行放電；考慮到壁電荷之間的相互作用，研究了正方網格斑圖的穩定性；實驗發現正方網格斑圖的微放電絲放電時間間隔是長短交替變化的，考慮到電介質表面積累的壁電荷的作用，使用擊穿?熄滅方程很好的解釋了該現象。Firstly in this part, computer simulation methodology based on the baecher model for generating network of discrete fractures was presented, which includes the follow details : probability distributions of fracture density, orientation, trace length, size, and aperture and estimation of their statistical parameters ; stochastic models of fracture network ; monte - carlo ' s simulation method ; numerical simulation procedure and technicality. then, boundary element method was used to calculate flow through the generated fractured network. assuming single fracture as a two - dimension inexpressible isotropic porous media, boundary element method equations for flow in single fracture and then in fracture network were derived using the weighted residual method
給出了離散裂隙網路模型所依據的基本假定；發展了基於baecher模型的離散裂隙網路計算機隨機生成技術：詳細地推導了單裂隙滲流和多裂隙相交網路滲流的邊界單元法公式，發展了離散裂隙網路中穩態滲流的邊界元數值技術，並且討論了相關的具體數值技術細節，如角點的處理方法，單元的自動剖分等：描述了混合邊界元?管流模擬方法及其數值實現；研究了裂隙網路的簡化方法，並針對裂隙網路邊界元法的特點提出了一種改進的分塊三角分解法。The composition doctrine declares that international commercial arbitration power are composed of certain elements of contractual power judicial power and autonomous characteristics, so this doctrine can be further divided into three unitary doctrines and three complex doctrines. the given disposition power doctrine believes internat
構成說認為，國際商事仲裁權的性質是由契約論、司法權論和自治論三種學說單獨或組合而成，由此形成了三種單一論主張和三種混合多元論主張。Based on the actual construction, a study on the simulative calculation for both the temperature and the thermal stress of the continuous rcc placement for the construction of langtan rcc gravity dam is made with 3 - d finite element method
摘要結合施工過程，應用三維有限單元法，對龍灘大壩連續澆築混凝土的溫度及溫度應力，進行模擬計算的研究。By combining the displacement function of two - end fastened strip in finite strip method ( fsm ) with that of rectangular element in finite element method ( fem ), the compound finite strip - element method is used to solve plane problems with mechanics of elasticity
摘要將有限條帶法（ fsm ）中兩端固定條和有限單元法（ fem ）中矩形單元的位移函數相迭加，運用混合條元法來求解平面彈性力學問題。The temperature stress is analyzed by formula and numerical method respectively ; and the fit temperature step is obtained. the interactions of undamaged pavement and soft clay ground, damaged pavements and soft clay ground are studied under the conditions of temperature change
其次，採用公式法和有限單元法計算一維瀝青混凝土桿低溫下變溫的溫度應力，通過分析給出了採用有限單元法計算溫度應力時的合適溫度步長。This paper summarized the current status of vegetation classification based on rs technology at home and abroad, and pointed out the developing trend as follows : ( 1 ) from single - phase, single - source classification to fusion of multitemporal, multi - source data ; ( 2 ) from single classifier to hybird classifiers ; ( 3 ) from hard classification to soft classification ; ( 4 ) from pixel - based classification to pixel unmixing and object - oriented classification ; ( 5 ) from traditional classification to intelligent classification
摘要綜述了國內外基於遙感技術進行植被分類的研究現狀，並提出植被分類的發展趨勢： （ 1 ）從單時相、單源遙感分類向多時相、多源信息融合發展； （ 2 ）從單一分類方法向復合分類方法發展； （ 3 ）從「硬」分類向「軟」分類方向發展； （ 4 ）從基於像元分類向混合像元分解分類和面向對象分類方向發展； （ 5 ）從傳統分類向智能分類方向發展。By applying " none homogeneous multi - laminate element ", hong - kou rcc gravity dam ' s simulation computing of temperature field and stress field at construction period and operation period for all courses and many factors. e. some kinds of methods are discussed in detail for temperature field back analysis, and artificial neural network method for back analysis of thermal parameters of concrete is suggested
應用「非均質層合單元法」實現了洪口碾壓混凝土重力壩施工期、運行期全過程多因素的溫度場及徐變應力場的模擬計算，進行多方案的比較分析，推薦出優選溫控防裂方案，取得了非常滿意的成果。In the process of finite element analyzing, the beam, column and b race that not enter the plastic parts adopt bearn element that considered geometry nonlinear. the links entering plastic adopt space degenerate shell element that considered the nonlinear large - deformation, together with mixed hardening rule, which linearly combines isotropic and kinematic hardening
在有限元分析過程中，對于未進入塑性部分的梁、柱及支撐採用梁單元，梁單元考慮了幾何非線性，對于進入塑性部分的耗能梁段採用空間退化曲殼單元，曲殼單元考慮了幾何和材料的雙重非線性，材料的強化採用了混合強化法則，非線性方程通過newton - raphson迭代結合增量法求解。The paper use drucker - prager model as the constitutive model of soil, use pole module as the model of soil nails, use girder module as the model of soil - cement mixing piles, use goodman module as the model of interface, an iterative - increment method is used to solve nonlinear equation. 2. the paper has a further research on the influence of compound soil nailing behavior in the perspective and the axial strength of the soil nails of the effect of the stiffness of soil, the stiffness of soil - cement mixing piles, the width of soil - cement mixing piles, the length of nails, the angle of nails
本文根據目前復合型土釘墻支護的研究現狀和工程實際需要，採用有限單元法對攪拌樁-土釘復合型土釘墻的力學特性進行數值分析，本文的主要工作內容有以下幾個部分: 1 .利用同濟曙光有限元軟體（ geofba ）對攪拌樁-土釘復合型土釘墻支護進行了非線性有限元分析，在有限元計算中，本文採用了drucker - prager模型作為土體的本構模型，土釘採用了桿單元模型，攪拌樁和噴射混凝土面層的組合體採用了梁單元模型，接觸面單元採用了goodman單元模型，非線性求解方法為增量迭代法。It is shown that the calculation results by the proposed method are in close agreement with the experimental results
計算結果表明，所建立的考慮滑移的鋼混凝土組合梁有限單元法與試驗值吻合較好，計算結果可靠。Based on matrix displacement method for arch structure and fiber element method for concrete - filled steel tube arch bridge, the solid - beam method for concrete - filled steel tube arch bridge was presented
摘要本文結合拱結構計算的矩陣位移法和鋼管混凝土拱橋分析的纖維單元法，特提出鋼管混凝土拱橋計算的實體梁單元法。分享友人